Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
dang van » hoang van, hang va
tu sach » su sach, te sach, tu cach
cac xuc » cam xuc, cac nuoc, chat xuc
tai duc » mai duc, tai du, tran duc
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (thu sach)) ky dang van hoa. hieu ve cac xuc va hanh ((tai duc) or (tai cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky dang van hoa. hieu ve cac xuc va hanh ((tai duc) OR (tai cuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky dang van hoa. hieu ve cac xuc va hanh ((tai duc) or (tai cuc)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky dang van hoa. hieu ve cac xuc va hanh ((tai duc) or (tai cuc)) tre*.